Melissa:
* Miri: This name means "bright" or "shining" and is a beautiful and common Māori name.
* Mere: This name means "pearl" and is also a popular Māori name.
* Meri: This name is a variation of "Mere" and also means "pearl".
* Riana: This name means "queen" and is a strong and elegant option.
Milo:
* Mita: This name is a Māori version of "Michael" and could be a suitable alternative.
* Moko: This name means "tattoo" and is a unique and masculine option.
* Tane: This name means "man" or "human" and has a strong and traditional feel.
* Tama: This name means "child" or "son" and is a popular Māori name.
Ultimately, the best option will depend on your preference and the meaning you want to convey. You can also choose a name that sounds similar to the English name.